Shuttle-actuating mechanism for sewing-machines.



No. 770,217. PATENTED SEPT. 13, 1904. I E. L. BOWERS.

SHUTTLE AOTUATING MECHANISM FOR SEWING MACHINES.

APPLICATION FILED 110mm. 190s.

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N0 MODEL.

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PATENTED SEPT. 13, 1904.

' SHUTTLE AGTUATING MECHANISM FOR SEWING MACHINES.

' APPLICATION FILED NOV. 24, 1903.

NO MODEL.

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82) his aEdwmdL.B0w6rs 1 HOZHQ'IJ- UNIT D STATES Patented September 13, 1904.

PATENT Trice.

EDWARD L. BOWERS, OF ORANGE, MASSACHUSETTS, ASSIGNOR TO THE NEW HOME SEWVING MACHINE COMPANY, OF ORANGE, MASSACHU- SETTS, A CORPORATION OF MASSACHUSETTS.

SHUTTLE-ACTUATING MECHANISM FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent N0. 770,217, dated September 13, 1904,

Application filed November 24, 1903. Serial No. 182,457. (No model.)

To (ZZZ whom, it may concern:

Be it known that I, EDWARD L. BOWERS, a citizen of the United States, and a resident of Orange, in the county of Franklin and State of Massachusetts, have invented certain new and useful Improvements in Shuttle-Actuating Mechanism for Sewing-Machines, of which the following is a specification.

This invention relates to sewing-machines of the rotary shuttle class, and has for its object to provide an improved shuttle-actuating mechanism.

To this end the invention consists in the novel features of construction and combination of parts, as hereinafter set forth in detail and pointed out in the claims.

Referring to the accompanying drawings, forming part of this specification, Figure 1 is a side elevation of a sewing machine embodying the invention with the bed-plate and certain connecting parts in section to more clearly show the shuttle-actuating mechanism at the under side thereof. Fig. 2 is an enlarged detail, in side elevation, of the shuttle and its actuating mechanism, the rotary driving-shaft forming part of the latter being broken away and the raceway-frame for the shuttle being shown in dotted lines. Fig. 3 is a longitudinal section of the shuttleactuat ing mechanism shown in Fig. 2, taken online 3 3 of Fig. 4. Fig. 4 is an end view of the same as viewed from the left in Fig. 3, showing the front end of the shuttleengaging plungers; and Fig. 5 is a section on line 5 5 of Fig. 2, showing the rear end of the shuttleengaging plungers.

Referring now in detail to the several views, 1 indicates the bed-plate of the machine; 2, the rotary shuttle; 3, the raceway-frame within which the shuttle is supported to rotate, and 4 the rotary shuttle-shaft journaled in suitable bearings on the under side of the bedplate 1 and being adapted to actuate the shuttle through the medium of certain devices to be described, the said shaft being driven by suitable actuating mechanism forming no part of my present invention. Adjacent to the front end of the shuttle-shaft 4 and surrounding the same is a grooved cam 5,

which is supported in a fixed or stationary position by means of a hub 6 thereon extending into a hanger 7 on the under side of the bed-plate and being secured therein by suitable fastening means, such as the set-screw 8, this cam in the present case constituting a bearing for the shuttle-shaft at its forward end. Attached to the shuttle-shaft in a position forward of this grooved cam is a yoke which comprises a cross-head 9, centrally afiixed to the shuttle-shaft by suitable fastening means, such as the pin 10, and'having at its opposite ends two rearwardly-projecting arms 11 11, which extend transversely across the periphery of the cam 5. Seated within these yoke-arms 11 11 are sliding plungers 12 12, which are each provided with a pin carrying thereon an antifriction-roll 14, that enters the groove of the earn 5. By this described construction and arrangement of parts when the shuttle-shaft, with the connected yoke, is rotated the cam 5, engaging with the rolls 14 14 of the plungers 12 12, causes the latter at their front ends to alternately enter and withdraw from openings 2 in the shuttle, so as to rotate the latter and at the same time permit of the passage therebetween of the needle-thread loop in the usual manner. The yoke for carrying the shuttle-actuating plungers in the form shown and described leaves the groove of the cam 5 open and eX- posed, so that the passage therethrough of the friction-rolls 14 will prevent the undue accumulation therein of lint, dust, or other foreign substance, while the plunger-seats in the yoke-arms 11 11 being open at their inner sides or the sides adjacent to the cam, as most clearly shownin Figs. 3 and 5, also prevents the undue accumulation in such seats of any lint or other foreign substance. In this manner the free and proper operation of the shuttle-actuating parts is assured, as the undue accumulation of any lint or other foreign substance in their path of movement, such as might tend to interfere with their proper action, is prevented.

What I claim is- 1. In a sewing-machine, the combination of a rotary shuttle having openings therein, a rotary driving-shaft, a stationary open-grooved cam surrounding said shaft, a yoke rigidly attached to the shaft to be carried thereby and comprising a cross-head having a plurality of arms extending transversely across the periphery of the cam, and plungers slidably supported in the said yoke-arms and operated by the cam to alternately enter and Withdraw from the openings in the shuttle, for the purpose set forth.

2. In a sewing-machine, the combination of a rotary shuttle having openings therein, a rotary driving-shaft, a stationary open-grooved cam surrounding said shaft, a yoke rigidly attached to the shaft to be carried thereby and comprising a cross-head having a plurality of arms extending transversely across the periphery of the cam, the said yoke-arms being provided with seats therein open on that side adjacent to the cam, and plungers slidably supported in the seats of said yoke-arms and having connected parts engaged by the grooved cam and operated thereby to cause I EDWARD L. BOWERS.

Witnesses:

WILLIAM W. WATERS, VILLIAM P. CONRAD. 

